(6)
 Do step (5) again on the lock-angle (5) on the opposite side of the retainer (4).

 (7)
 On the accessible side of the retainer (4), use a scewdriver to push the lock-angle (5) inwards until the retainer (4) is released from its horizontal retaining groove.

 (8)
 Lift the retainer (4) upwards and sideways at the same time to release the retainer from the horizontal retaining groove on the opposite side.

 (9)
 Remove the retainer (4).

 (10)
 Do steps (3) thru (9) again for the remaining retainers (4).

 (11)
 Remove the PCB (1) from the PSIU (3).

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-49Page 405 1201-299, 1May 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-399, 401-499,

 TASK 23-73-49-400-001
 Installation of the Printed Circuit Board (PCB) with the Bulbs or LEDs
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
98A25207503000 1 PULLEY ASSEMBLY - SEALING CORD
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
23-73-00-861-001 Energize the Cabin Intercommunication Data System (CIDS) 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 33-25-00-710-001 Operational Test of the Passenger Reading Light-System
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 23-73-49-991-001 Fig. 401
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-49Page 406 1201-299, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-399, 401-499,

 3. Job Set-up
__________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 Subtask 23-73-49-860-051
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (2)
 Make sure that the applicable PSIU is open.

 (3)
 Make sure that the lock-angles (5) are loosely fitted on the retainers (4).

 **ON A/C 001-049, 051-099, 101-105, 201-299,
 Subtask 23-73-49-865-052
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------
PANEL SERVICE IDENT. LOCATION
 -------------------------------------------------------------------------------
2000VU PASSENGER READING LIGHT 1LW G02
 2000VU PASSENGER READING LIGHT 2LW G03
 2000VU PASSENGER READING LIGHT 3LW G04
 2000VU PASSENGER READING LIGHT 4LW G05
 2000VU PASSENGER READING LIGHT 5LW G06
 2000VU PASSENGER READING LIGHT 6LW G07
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-49Page 407 1201-299, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1R **ON A/C 151-199, 301-399, 401-499,

 Subtask 23-73-49-865-056
 C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------
PANEL SERVICE IDENT. LOCATION
 -------------------------------------------------------------------------------
2000VU PASSENGER READING LIGHT 1LW G1
 2000VU PASSENGER READING LIGHT 2LW G2
 2000VU PASSENGER READING LIGHT 3LW G3
 2000VU PASSENGER READING LIGHT 4LW G4
 2000VU PASSENGER READING LIGHT 5LW G5
 2000VU PASSENGER READING LIGHT 6LW G6
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 Subtask 23-73-49-865-054
 D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU COM/CIDS/DEU A ESS/LINE 2 155RH G05 49VU COM/CIDS/DEU A ESS/LINE 1 154RH G04
 **ON A/C 001-049, 051-099, 101-105, 201-299,
 121VU COM NAV/CIDS/DEU A NORM/R AFT 168RH M13 121VU COM NAV/CIDS/DEU A NORM/L AFT 167RH M12 121VU COM NAV/CIDS/DEU A NORM/R MID 166RH M11 121VU COM NAV/CIDS/DEU A NORM/L MID 165RH M10 121VU COM NAV/CIDS/DEU A NORM/R FWD 164RH M09 121VU COM NAV/CIDS/DEU A NORM/L FWD 163RH M08
　
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